For seven months, [Bernardo Kastrup] at [TheByteAttic] has been realizing his childhood dream of building his own computer. It was this dream that steered him into the field of computer design at the age of 17. After thirty years in the industry, he finally has some time to design the computer he dreamt about as a kid. His requirements are ambitious: fully open design, gate-level details, thru-hole or PLCC for easy hacking, well-established processors with existing tool chains, low-cost development tools for CPLDs, no FPGA, standard ITX case compatible, and so on. He quite reasonably decides to use more modern electronics for video (VGA), keyboard (PS/2), and program storage (flash drive). Along the way, he chooses to put three processors on the board instead of one:
Zilog Z84C0010 (Z80)
WDC W65C0256 (6502)
AVR ATMEGA328 (RISC Controller)
When coming up with the concept and requirements, [Bernardo] had a fictitious alternate history in mind — one where there were follow-ups to the ZX80, PET/CBM, or TRS-80 from the late 1970s that were extensions to the original systems. But he also wanted a clean design, without cost-cutting gimmicks, in order to make it easier for learners to focus on computing itself — a didactic architecture, as he describes it. Turn the crank for seven long months, and we have the Cerberus 2080. [Bernardo] has put the design on GitHub, and made a video series out of the whole process, of which the introduction video is below the break. There’s even an online emulator developed by retro hacker [Andy Toone].
Sometimes, it’s really useful to watch a project’s parts come together one piece at a time in order to get a complete understanding and mental picture of the whole, and we found that to be the case with this simple, retro-inspired sample game from [ezContents]. (Video, embedded below.) The code is on GitHub but if you’re at all interested in what goes on behind the scenes in a game like that, don’t miss the video.
These sprite-based games are mostly about moving a small graphical object (a sprite) around a screen in response to user input, and managing what happens when collisions are detected between the player’s sprite and other sprites like enemies, projectiles, and so forth. The development process is wonderfully documented and demonstrated in a video, as each separate part of functionality gets built and explained one piece at a time.
The simple game is made using ArduPy (which is MicroPython combined with Arduino APIs) using Seeed Studios’ Wio Terminal, a small microcontroller development board with integrated screen, sensors, and button inputs including a little directional clicker that [ezContents] uses as a joystick.
The video of the whole process is embedded below; give it a watch and you’ll maybe come away with inspiration, but you’ll definitely have a much better understanding of how these types of games are developed, even if you’re not using the same hardware or development environment.
One thing about vintage computers is that they depend greatly on whether or not one can plug a compatible monitor into them. That’s what’s behind [Tube Time]’s Graphics Gremlin, a modern-design retro ISA video card that uses an FPGA to act just like a vintage MDA or CGA video card on the input end, but provides a VGA port for more modern display output options. (Actually, there is also an RGBI connector and a composite video out, but the VGA is probably the most broadly useful.)
Why bother making a new device to emulate an old ISA video card when actual vintage video cards are still plentiful? Because availability of the old cards isn’t the bottleneck. The trouble is that MDA or CGA monitors just aren’t as easy to come across as they once were, and irreplaceable vintage monitors that do still exist risk getting smashed during shipping. Luckily, VGA monitors (or at least converters that accept VGA input) are far more plentiful.
It’s hard to look at today as anything but the golden age of computing. Even entry level machines have quad-core processors and a terabyte or more of storage space, to say nothing of the incredible amount of tech packed into the modern smartphone. But even so, there’s something to be said for the elegant simplicity of early desktop computers.
Looking to recreate the feeling of those bygone days, [Pigeonaut] created the Callisto II. Its entirely 3D printed case snaps together without glue or screws, making it easy to assemble, and the parts have been sized so they’ll be printable even on smaller machines like the Prusa Mini. Inside you’ll find a 1024×768 Pimoroni HDMI 8″ IPS LCD, 60% mechanical keyboard, four-port USB 3 hub, Raspberry Pi 4, and a 22 watt USB power supply to run it all.
Incidentally the II suffix isn’t just part of the meme, there really was a Callisto before this one. We covered the earlier machine back in 2019, and while we’re a bit sad to see that the functional 3.5 inch floppy drive has been deleted, we can’t deny the overall aesthetics have been greatly improved in the latest version.
The toys of the past may have been cheesy, but you can’t deny the creativity needed to build something engaging without any electronics. One stalwart toy from this category is View-Master, the little stereoscopic slide viewer that brought the world to life in seven vibrant scenes. And digitizing these miniature works of art is the purpose of this neat View-Master reel scanner project.
If you haven’t had the pleasure of using a View-Master, the gist is that a flat disc cardboard disc ringed with 14 color transparencies was inserted into a plastic viewer. Binocular eyepieces showed scenes from opposing pairs of slides, which were illuminated by a frosted screen and room lighting. The scenes were photographed from slightly different angles, leading to a stereoscopic image that was actually pretty good quality.
In the video below, project creator [W. Jason Altice] describes View-Master as “the YouTube of the 1950s.” We partially agree; with only seven frames to tell a story, we’d say it’s more like TikTok than YouTube. Regardless, capturing these mini-movies requires quite a bit of complexity. All the parts for the reel carousel are 3D-printed, with a small stepper to advance the reel and an optical sensor to register its position. A ring of RGB LEDs beneath the reel illuminates the slides; being able to control the color of the light helps with color balancing for slides with faded colors. An 8-megapixel camera captures each slide, and some pretty slick software helps with organizing the image pairs, tweaking their alignment, capturing the captions from the disc, and stitching everything into a video.
There’s a whole YouTube channel devoted to View-Master captures, which are best viewed with a Google Cardboard or something similar. Even without the 3D effect, it’s still pretty cool to watch [Popeye] beat up a nuke again.
There are so many ways to make things look awesome by pulling inspiration from great retro hardware. And combining today’s futuristic functionality with yesterday’s lines, colors, and kitsch is the quick path to a winning combination. So why not give it a try and show us what you got? That’s the gist of Hackaday’s Reinvented Retro Contest which begins right now and runs through June.
This smart TV should help get you thinking in a retro-modern way. You’d never know it wasn’t stock… except when it starts streaming The Falcon and the Winter Soldier via the Roku hidden inside. Fit and finish on this one is spectacular and that woodgrain remote is a piece of artwork!
So what will it be? Keurig in a 1960’s Perculator? Desk lamp in a rotary telephone? GHz oscilloscope where a CRT used to live? Perhaps a Raspberry Pi laptop in a 1990’s form-factor? You get to decide what “Retro” means, just make sure you thoroughly show off the build!
Digi-Key is sponsoring this contest and there are $200 shopping sprees from their warehouse up for grabs for each of three top winners. Make a project page over on Hackaday.io and use the “Submit project to…” dropdown in the left side bar to enter it in the Reinventing Retro Contest.
As functional as the application is, there are still improvements and optimizations to be made. To address this, [omni_shaNker] put out a call for beta testers on Reddit, so if that’s up your alley be sure to get in touch. A video demonstration and overview that is chock-full of technical details is also embedded below; be sure to give it a watch to see what the project is all about.